One pipe can fill a tank in 4 hours. Another pipe can fill the tank in 6 hours. How manyhours will it take to

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One pipe can fill a tank in 4 hours. Another pipe can fill the tank in 6 hours. How manyhours will it take to

[From: ] [author: ] [Date: 11-05-08] [Hit: ]

t = 144 min = 2 hour 24 minute-1/t = 1/4 + 1/6 = 0.25+0.1667 = 0.t = 2..-2 hours and 24 minutes.......

fill the tank if both pipes are working together? Write answer in hours and minutes. Thanks!

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1 tank filled = (time / 240 min) + (time / 360 min)

1 = t/ 240 min + t/360 min
1/t = 3 /720 min + 2 /720 min
5t = 720 min
t = 144 min = 2 hour 24 minute

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1/t = 1/4 + 1/6 = 0.25+0.1667 = 0.4167
t = 2.4 hours

you should be able to figure out the minutes

.

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2 hours and 24 minutes.

1

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